<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
	li{
		width: 300px;
	}
	span{
		margin-left: 100px;
		
		}
	</style>
</head>
<body>
	<input type="text" class="num">
	<input type="button" class="rel" value="添加">
	<ul>
		<li>足球<span>删除</span></li>
		<li>篮球<span>删除</span></li>
		<li>台球<span>删除</span></li>
		<li>橄榄球<span>删除</span></li>
		<li>实心球<span>删除</span></li>
	</ul>
</body>
</html>